function loadResourceFile(filename, filetype) {
	if (filetype == "js") {
		var fileref = document.createElement('script')
		fileref.setAttribute("type", "text/javascript")
		fileref.setAttribute("src", filename)
	} else if (filetype == "css") {
		var fileref = document.createElement("link")
		fileref.setAttribute("rel", "stylesheet")
		fileref.setAttribute("type", "text/css")
		fileref.setAttribute("href", filename)
	}
	if (typeof fileref != "undefined")
		document.getElementsByTagName("head")[0].appendChild(fileref)
}

function removeResourceFile(filename, filetype) {
	var targetelement = (filetype == "js") ? "script"
			: (filetype == "css") ? "link" : "none";
	var targetattr = (filetype == "js") ? "src" : (filetype == "css") ? "href"
			: "none";
	var allsuspects = document.getElementsByTagName(targetelement)
	for ( var i = allsuspects.length; i >= 0; i--) { 
		if (allsuspects[i]
				&& allsuspects[i].getAttribute(targetattr) != null
				&& allsuspects[i].getAttribute(targetattr).indexOf(filename) != -1){
			allsuspects[i].parentNode.removeChild(allsuspects[i])
		}			 
	}
}